Gas-meter.



J. W. DANAHER.

Patented Nov. 8, 1910.

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JOHN W. DANAHER, OF TORONTO, ONTARIO, CANADA, ASSIGNOR OF ONE-HALF TOELIAS E. SLAGHT, OF TORONTO, CANADA.

GAS-METER.

To all whom it may concern:

Be it known that I, JOHN W. DANAHER, of the city of Toronto, Province ofOntario, Canada, have invented certain new and useful Improvements inGas-Meters, of which the following is a specification.

This invention relates to dry gas meters in which the gas chambers areformed of bellows having leather sides and metal end disks. The leatheris in the first place well oiled to render it pliable but in a few yearsthe action of the gas renders the leather hard which afi'ects the actionof the meter. It then becomes necessary to re-oil the leather to restoreits original pliability. This it is found cannot be done satisfactorilyfrom the outside and the usual practice has been to cut a hole in theend disk through which a swab could be introduced and the leather oiledtherewith. As a large central hole was necessary, the rock armconnection through which the motion of the disk was conveyed to thegearing was of course removed with the piece of the disk cut out, andafter the oiling a new piece had to be soldered on the disk and theconnection again soldered in place. This process is expensive andnecessitates the subsequent readjustment of the meter gear as it isimpossible to insure the replaced parts being in exactly their originalpositions.

It is the object of my invention to make the oiling of the leather fromthe inside possible without cutting holes in the disk thus avoiding allthe trouble and expense of the present system.

I attain my object by the construction shown in the accompanyingdrawings in which Figure 1 is a perspective view of a meter constructedin accordance with my invention and partly broken away to expose theinterior. Fig. 2 is a section of one of the bellows of a meterconstructed in accordance with my invention. Fig. 3 is a sectionaldetail showing a modification of the invention.

In the drawings like letters of reference indicate corresponding partsin the different figures.

A is the casing of the meter and B the partition or diaphragm dividingthe bellows compartments. This partition forms one end of each bellows,the outer end of Specification of Letters Patent.

Application filed March 23, 1910.

Patented Nov. 8, 1910. Serial No. 551,076.

each bellows being formed by a disk C. The partition and the disk areeach provided wlth a flange D to which the leather E forming the sidesof the bellows is attached.

movement of the bellows to the register as shown. The rock arm H isrigidly connected to this vertical spindle and is pivoted on theconnection I secured to the center of the disk C.

In the preferred construction shown in Figs. 1 and 2 I form a hole inthe disk G close to the edge of the disk so that it will not only servefor the introduction of oil but will also serve for the draining out ofany surplus. This location is important as the disk is usually dished asshown. This hole is provided with a suitable closure. For this purpose athreaded flange J is provided and a screw cap K adapted to screw intothe flange. As a variation the opening may be made in one of the flangesD as shown in Fig. 3, preferably that one which is connected to thepartition 13. A tube L is connected with this opening and extends to anyconvenient position, its end being closed by the screw cap M.

lVith each form the mode of operation when the leather of the bellows isto be oiled is as follows-The closure'of the opening is removed and asufficiency of oil poured in. The meter is then slowly rotated so thatthe oil runs around the leather thoroughly soaking the same. As soon asthe leather is thoroughly saturated, the surplus oil is drained out andthe closure again applied. Of course, each of the bellows of the meterwill be similarly treated. It will be necessary, of course, to unsolderthe back and front of the meter to get at the bellows, but this has tobe done in any case. With my construction, however, the cost of cuttingopen the disks, replacing the parts and re-adjusting the meter isentirely avoided. As meters require to have their bellows re-oiled everythree to five years the total saving during the life time of the meteris considerable, while the increased expense of my construction isexceedingly small.

I do not desire, of course, to limit myself to the exact constructionsshown as various other modifications besides that shown might be devisedwhich would Within the scope of my invention.

What I claim as myinvention is 1. A gas" as preview with B's-Haws havingannular leather sides and an oil opal ing adjacent said leather sidesand a closure therefor, said opening being arranged and located to drainthe bellows as Well as to forin an oil inlet. g

2. A gas meter provided with belldvvs having annular leather sides andmetal ends; one end of the bellows having an opening therein providedwith a freely removable and replaceable closure. 3.- A gas meterprovided with bellows 15 Having leather sides and enter

